"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : mot支持DDL
Case Name   : mot支持的DDL，修改表结构
Create At   : 2020/09/18
Owner       : opentestcase028
Description :
    1.创建普通MOT表，插入数据
    2.重命名MOT表名
    3.恢复环境默认配置，修改enable_incremental_checkpoint为on，并重启数据库
Expect      :
    1.创建MOT表成功，插入数据成功
    2.重命名MOT表名成功
    3.修改参数成功，重启数据库成功
History     :
    modified by opentestcase042,2023.01.05，MOT支持修改ALTER FOREIGN TABLE，恢复参数
"""

import os
import unittest
from testcase.utils.Logger import Logger
from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant


class Mot_DDL_test(unittest.TestCase):

    def setUp(self):
        self.logger = Logger()
        self.primary_sh = CommonSH('PrimaryDbUser')
        self.constant = Constant()
        self.commonsh = CommonSH
        self.common = Common()
        self.config = 'enable_incremental_checkpoint'
        self.logger.info(f'-----{os.path.basename(__file__)} start-----')
        self.logger.info('------------修改配置，并重启数据库------------')
        show_msg = self.common.show_param(self.config)
        if 'off' not in show_msg:
            msg1 = self.primary_sh.execute_gsguc('set',
                                            self.constant.GSGUC_SUCCESS_MSG,
                                            f'{self.config}=off')
            self.logger.info(msg1)
            msg2 = self.primary_sh.restart_db_cluster()
            self.logger.info(msg2)
            msg3 = self.primary_sh.get_db_cluster_status()
            self.assertTrue("Normal" or "Degrade" in msg3)
        show_msg = self.common.show_param(self.config)
        self.assertTrue('off' in show_msg)

    def test_mot_usddl(self):
        text = '------------step:MOT支持的DDL，修改表结构;expect:成功-------------'
        self.logger.info(text)
        self.schema = 'schema_mot_0047'
        self.t_name = 't_mot_0047'
        self.t_name_new = 't_mot_0047_new'
        self.sql_cmd1 = f''' 
                        drop schema if exists {self.schema} cascade;
                        create schema {self.schema};
                        create foreign table {self.schema}.{self.t_name} (c1 varchar(196) ,c2 int);
                        insert into {self.schema}.{self.t_name} values ('ddd',1);
                        insert into {self.schema}.{self.t_name} values ('ccc',2);
                        insert into {self.schema}.{self.t_name} values ('asd',3);
                        select * from {self.schema}.{self.t_name};
                      '''
        msg4 = self.primary_sh.execut_db_sql(self.sql_cmd1)
        self.logger.info(msg4)
        self.assertIn(self.constant.CREATE_SCHEMA_SUCCESS_MSG, msg4)
        self.assertIn(self.constant.CREATE_FOREIGN_SUCCESS_MSG, msg4)
        self.assertIn(self.constant.INSERT_SUCCESS_MSG, msg4)

        self.sql_cmd2 = f''' 
                        alter foreign table {self.schema}.{self.t_name} rename to {self.t_name_new};
                        drop foreign table if exists {self.schema}.{self.t_name_new};
                        drop schema {self.schema} cascade;
                      '''
        msg5 = self.primary_sh.execut_db_sql(self.sql_cmd2)
        self.logger.info(msg4)
        self.assertIn('ALTER FOREIGN TABLE', msg5)
        self.assertIn(self.constant.DROP_FOREIGN_SUCCESS_MSG, msg5)
        self.assertIn(self.constant.DROP_SCHEMA_SUCCESS_MSG, msg5)

    def tearDown(self):
        self.logger.info('------------this is tearDown-------------')
        self.logger.info('-----------恢复配置，enable_incremental_checkpoint=on-----------')
        show_msg = self.common.show_param(self.config)
        if 'on' not in show_msg:
            msg6 = self.primary_sh.execute_gsguc('set',
                                                 self.constant.GSGUC_SUCCESS_MSG,
                                                 f'{self.config}=on')
            self.logger.info(msg6)
            msg7 = self.primary_sh.restart_db_cluster()
            self.logger.info(msg7)
            msg8 = self.primary_sh.get_db_cluster_status()
            self.assertTrue("Normal" or "Degrade" in msg8)
        show_msg = self.common.show_param(self.config)
        self.assertTrue('on' in show_msg)
        self.logger.info(f'-----{os.path.basename(__file__)} end-----')
